One-piece molded inductor and manufacturing method thereof

A manufacturing method and inductor technology, which is applied in the manufacture of inductors/transformers/magnets, transformer/inductor cores, circuits, etc., can solve problems such as component gaps, improve current resistance performance, reduce production costs, and reduce magnetic losses. Effect

Active Publication Date: 2018-03-27
重庆金籁科技股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In order to improve the shortcomings of open magnetic components, the market often adopts the method of adding a cover outside the magnetic core, commonly known as combined magnetic core components (DrumCore), but this design still has the problem of component gaps (Gap), and this part of the gap Will cause more than 50% magnetic loss

Method used

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  • One-piece molded inductor and manufacturing method thereof
  • One-piece molded inductor and manufacturing method thereof
  • One-piece molded inductor and manufacturing method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] The copper wire is wound into a coil, the two ends of which are respectively electrically connected to the first electrode pin and the second electrode pin; the reduced iron powder and the liquid silica gel are mixed uniformly according to the weight ratio of 100:2 to form a filler, and the filler is heated at a temperature of 70 Keep the temperature for 0.5h at ℃; place the coil connected with the first electrode leg and the second electrode leg in a mold, where a marking area is provided inside the mold, and the filler is injected into the mold to form an integral inductor by stamping. Wherein, the filler forms a magnetic core in the middle of the coil, and an outer magnet is formed on the outside of the coil, and the magnetic core and the outer magnet are integrally formed to wrap the coil. Wash the surface of the above-mentioned integrated inductor with glass sand for 15s, then place the washed integrated inductor at 78℃ for 0.5h; then at 140℃ for 0.6h; finally at 160...

Embodiment 2

[0042] The copper wire is wound into a coil, the two ends of which are respectively electrically connected to the first electrode pin and the second electrode pin; the carbon-based iron powder, liquid silica gel and γ-aminopropylmethyldimethoxysilane are mixed uniformly to obtain the filler , Wherein the weight ratio of carbon-based iron powder to liquid silica gel is 100:10, and the weight ratio of γ-aminopropylmethyldimethoxysilane filler to liquid silica gel is 1:99; the filler is placed at a temperature of 80℃ The lower heat preservation is 0.3h; the coil connected with the first electrode leg and the second electrode leg is placed in the mold, where a marking area is provided inside the mold, and the filler is injected into the mold to form an integral inductor by stamping, wherein, The filler forms a magnetic core in the middle of the coil, and an outer magnet is formed on the outside of the coil, and the magnetic core and the outer magnet are integrally formed to wrap the...

Embodiment 3

[0044] The copper wire is wound into a coil, the two ends of which are respectively electrically connected to the first electrode pin and the second electrode pin; the iron-based amorphous alloy and the liquid silica gel are mixed uniformly according to the weight ratio of 100:3 to form a filler, and the filler is heated Keep the temperature at 76°C for 1 hour; place the coil connected with the first electrode leg and the second electrode leg in the mold, inject the filler into the mold, and press to form an integral inductor. The filler forms a magnetic field in the middle of the coil. A core, an outer magnet is formed on the outside of the coil, and the magnetic core and the outer magnet are integrally formed to wrap the coil. Then place the integrated inductor at 80°C for 0.5h; then bake at 137°C for 0.52h; finally, bake at 164°C for 1h, so that the integrated inductor is completely cured; then the cured integrated inductor The first electrode leg and the second electrode le...

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Abstract

The invention provides a manufacturing method of an integrally molded inductor, and belongs to the technical field of inductance elements. The method comprises the steps of winding a copper wire into a coil and electrically connecting the coil and an electrode pin; mixing a magnetic-conducting material with liquid silicone gel evenly at the mass ratio of 100:(2-15) to form a filler and carrying out heat preservation on the filler under the condition that the temperature is 70-80 DEG C for 0.2-1 hour; and putting the coil connected with the electrode pin into a mold, filling the mold with the filler and carrying out integral stamping to form the integrally molded inductor. The manufacturing method is simple; and the technological process is saved. Furthermore, the invention further provides the integrally molded inductor manufactured by the manufacturing method. The current resistance of the integrally molded inductor is significantly improved; the inductor is stable in structure; the magnetic loss can be reduced; and the noise at work can be reduced.

Description

Technical field [0001] The invention relates to the technical field of inductance elements, and in particular to an integrated inductor and a manufacturing method thereof. Background technique [0002] Inductance components are extremely important components in the electronics industry. Traditional inductance components are made by winding a magnetic material component or wrapping a coil made of a magnetically conductive material to form an inductance component. The traditional inductance element is composed of a combination of two magnetic cores and a coil. The lower magnetic core is provided with a groove for accommodating the coil. The upper magnetic core is covered with its corresponding cover, and then glued and bonded. , Baking and other processes, the two magnetic cores are combined into one cladding. This kind of inductance element has a gap in the combination of two magnetic cores. This is a big magnetic permeability defect, which will cause vibration and noise, and wil...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01F41/02H01F27/24
CPCH01F27/24H01F41/02H01F41/0246
Inventor 范超
Owner 重庆金籁科技股份有限公司
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